Fluffeh writes: "General Motors spends around $40 million per year on maintaining a Facebook profile and around a quarter of that goes into paid advertising. However, in a statement, they just announced that "it's simply not working". That's a bit of bad news just prior to the Facebook IPO — and while Daniel Knapp tries to sweeten the news, he probably makes it even more bitter by commenting "Advertising on Facebook has long been funded by marketing budgets reserved for trying new things. But as online advertising investments in general are surging and starting to cannibalize spend on legacy media, advertisers are rightfully asking whether the money spend is justified because it has reached significant sums now.""